450D + 70-200 F4L + 1.4x extender = Autofocus?

Hunders

Hunders

Hunders

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I need the above cleared up for me please.

If using a Canon 70-200mm F4 L with a Canon 1.4x extender on a 450D body will the autofocus still work fine?

Cheers.
 
Rather hopeless article tbh. The lens list is totally out of date and I can think of at least three lenses missing off it.

As for the AF compatibility list, why don't they just refer to the aperture rather than listing every damn lens!? :rolleyes:

To the OP: Yes it will :)
Basically, the 1.4x costs you a stop whilst the 2x costs you two stops.
The 1D bodies will AF up to f/8 whilst all others will only AF up to f/5.6.
Therefore your 70-200 will be f/5.6 with the 1.4x and will thus still AF :)
 
Ah, brilliant!

It's slightly annoying that the F4 IS isn't supported because I was looking at the possibility of stretching my budget to one.

Cheers.
 
It is supported and is one of the lenses I referred to as being missing from that list - together with the 200mm f/2 and 800mm f/5.6.

All variants of the 70-200 work with the extenders. I have an F4 IS myself and have used the 1.4x with it.
 
Hunders said:
Ah, brilliant!

It's slightly annoying that the F4 IS isn't supported because I was looking at the possibility of stretching my budget to one.

Cheers.
Click to expand...

The 70-200 F/4 IS is supported by the 1.4x converter. A quick google search shows this.
 
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